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INCINERATION FOR MUNICIPAL SOLID WASTE TREATMENT Yuliani, Manis
Jurnal Rekayasa Lingkungan Vol 9, No 2 (2016): Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.405 KB)

Abstract

In order to reduce the accumulation of waste in landfill, incineration technology could becomes one of the solutions. In addition to reduce the volume of waste, the energy generated by incineration process can also be utilized. Plant Incineration consists of four categories process, namely pre-treatment process, combustion process, energy recovery process and flue gas treatment process (Air Pollution Control system). Pre-treatment process is used to increase the average calorific value of waste. Pre-treatment process depends on the type of incinerator used. Combustion process in an incinerator must accommodate the principles of 3 T (temperature, turbulence, time). Process conditions for the type of incinerator grate in accordance with the principle of 3 Tare the waste residence time in the grate less than 60 minutes, gas residence time more than 2 seconds and the gas temperature over 850 C. In the combustion process will produce heat carried by flue gas. The heat will flow into energy recovery process to be utilized. From energy recovery process, flue gas will enter into the APC system to reduce air pollution caused by combustion process.keywords : incinerator, waste, energy recovery
Evaluasi Produksi Refuse-Derived Fuel (RDF) dari Sampah Perkotaan (Studi Kasus: RDF Plant di Kabupaten Cilacap) Maulidayanti, Esti Mega; Yuliani, Manis; Robbani, Muhammad Haqqiyuddin; Wiharja, Wiharja; Hambali, Erliza; Setyaningsih, Dwi
Jurnal Teknologi Lingkungan Vol. 25 No. 2 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2024.1008

Abstract

Indonesia’s prevailing waste management paradigm, which still employs a collect-transport-dispose system, results in waste accumulation and adverse effects on health and the environment. In contrast, the cement sector’s necessity for renewable and environmentally benign energy is increasing. Refused-derived fuel (RDF) technology is one of the potential ways to solve both concerns. This study aimed to assess the viability of RDF manufacturing processes and products for the cement industry and to offer recommendations for a national standard. This research procedure included identifying waste composition and characteristics, observing RDF production, and evaluating RDF product quality, such as testing water content, ash content, and heating value. The results demonstrated that the Cilacap RDF Plant successfully produced RDF from municipal solid waste using the mechanical-biological treatment (MBT) method. The biodrying process could reduce waste’s moisture content from 55.44% to 23.63% and increase the heating value to approximately 15 MJ/kg. Nevertheless, the quality of RDF products must be enhanced to align with the biomass standards for the industry (SNI 8675: 2018). The Cilacap Plant RDF products were feasible for application in the cement industry, with further product quality improvement and production process optimization. The findings could be a reference for developing national standards in manufacturing RDF as an alternative fuel in the cement industry.   Abstrak Pengelolaan sampah di Indonesia masih menggunakan sistem kumpul-angkut-buang, menyebabkan penumpukan sampah dan dampak negatif terhadap kesehatan dan lingkungan. Di sisi lain, kebutuhan energi terbarukan dan ramah lingkungan di sektor industri semen terus meningkat. Teknologi bahan bakar jumputan padat atau refuse-derived fuel (RDF) dianggap mampu menyelesaikan kedua permasalahan tersebut. Penelitian ini bertujuan untuk mengevaluasi kelayakan proses pembuatan dan produk RDF untuk industri semen serta memberikan rekomendasi untuk pembuatan standar nasional. Prosedur penelitian ini mencakup identifikasi komposisi dan karakteristik sampah, observasi tahapan proses produksi RDF, dan evaluasi kualitas produk RDF seperti kadar air, kadar abu, dan nilai kalor. Hasil penelitian menunjukkan bahwa RDF Plant Cilacap berhasil memproduksi RDF dari sampah kota menggunakan metode mechanical-biological treatment (MBT). Proses biodrying mampu menurunkan kadar air sampah dari 55,44% menjadi 23,63% dan meningkatkan nilai kalor menjadi sekitar 15 MJ/kg. Namun, kualitas produk RDF masih perlu ditingkatkan untuk memenuhi standar biomassa untuk industri (SNI 8675:2018). Produk RDF Plant Cilacap dinilai cukup layak untuk industri semen, dengan beberapa rekomendasi untuk peningkatan kualitas produk dan optimalisasi proses produksi. Temuan ini diharapkan dapat menjadi rujukan dalam pembuatan standar nasional dalam produksi RDF sebagai bahan bakar alternatif di industri semen.
Analisis daya dukung lahan pertanian Indonesia pada bonus demografi tahun 2025 Yuliani, Manis; Asrofani, Farha Widya
Social Agriculture, Food System, and Environmental Sustainability Vol. 1 No. 1: (February) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future (IASSSF)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/safses.v1i1.2024.535

Abstract

Currently, Indonesia is striving to achieve the Sustainable Development Goals (SDGs), one of which is to eradicate hunger. Indonesia faces significant challenges in meeting the food needs of its population. Food needs are influenced by population growth rates and the composition of the population during the demographic bonus expected to occur between 2020-2030 (Casmudi, 2016). The population of Indonesia continues to increase from year to year. Based on projection data from the Central Statistics Agency (BPS) for the period 2010-2025, Indonesia's population continues to increase at a growth rate of 1.7% per year. In 2018, the population of Indonesia was 265,015,300 (BPS, 2018). During the demographic bonus, the proportion of the working-age population is larger than that of children and the elderly. The increasing number of productive age individuals will increase the demand for rice as the staple food of the Indonesian people to fulfill nutritional needs. It is estimated that the population at the peak of the demographic bonus will be 284,829,000 (BPS, 2018) with a working-age composition of 70% (Casmudi, 2016). The increase in population and the composition of the working-age population drive the increased demand for rice. In order to support the success of the 2025 demographic bonus, adequate support is needed. The carrying capacity of agriculture, especially rice cultivation, is analyzed to determine the position of Indonesia's rice agricultural land carrying capacity so that it can be considered in formulating appropriate policies to meet food needs independently. The objective of this research is to analyze the carrying capacity of agricultural land during the demographic bonus, especially in 2025 as the peak demographic period, to determine the status of the carrying capacity of rice agricultural land. Based on the analysis of land carrying capacity in 2025 during the peak demographic bonus, the value of harvested rice land carrying capacity is 2.418, which means that Indonesia is a country that is already self-sufficient in food but has not yet been able to provide decent livelihoods for its population. Efforts that can be made to increase carrying capacity to improve the standard of living include increasing productivity and controlling the conversion of agricultural land to non-agricultural land.